JPS63174855U - - Google Patents
Info
- Publication number
- JPS63174855U JPS63174855U JP12732986U JP12732986U JPS63174855U JP S63174855 U JPS63174855 U JP S63174855U JP 12732986 U JP12732986 U JP 12732986U JP 12732986 U JP12732986 U JP 12732986U JP S63174855 U JPS63174855 U JP S63174855U
- Authority
- JP
- Japan
- Prior art keywords
- manhole
- fire
- outputs
- received light
- light level
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000002347 injection Methods 0.000 claims description 2
- 239000007924 injection Substances 0.000 claims description 2
- 239000013307 optical fiber Substances 0.000 claims description 2
- 230000004913 activation Effects 0.000 claims 2
- 239000003795 chemical substances by application Substances 0.000 claims 2
- 230000003287 optical effect Effects 0.000 claims 2
- 230000003247 decreasing effect Effects 0.000 claims 1
- 239000000779 smoke Substances 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
- Laying Of Electric Cables Or Lines Outside (AREA)
- Fire Alarms (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12732986U JPS63174855U (enExample) | 1986-08-21 | 1986-08-21 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12732986U JPS63174855U (enExample) | 1986-08-21 | 1986-08-21 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63174855U true JPS63174855U (enExample) | 1988-11-14 |
Family
ID=31021975
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12732986U Pending JPS63174855U (enExample) | 1986-08-21 | 1986-08-21 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63174855U (enExample) |
-
1986
- 1986-08-21 JP JP12732986U patent/JPS63174855U/ja active Pending